Publish images to tgrep sandbox and get rid of "functional accounts"
SADE allows the presentation of images, which are stored in the private area of the TextGrid-Repository. To do so it makes use of a so called "functional account" which retrieve the image in the name of a user with restricted rights from the repository. This implementation has a number of drawbacks.
A better approach would be to identify images in a publication-to-sade in tgconnect and offer their publication to the textgrid-repository, at least to the sandbox area.
This way also the code for handling functional accounts and the digilib proxy could be removed from SADE. The textgrid digilib could be used directly, with faster image handling being a benefit, as e.g. caching from digilib would be used.
Publishing of images to the tgrep-sandbox via tg-connect would need a collection, where the images could be contained for publication. A default name should be offered, like "Images for [project name]".